单项选择题

Anyone can borrow books from the library（）he keeps them clean and returns them in time.

A．even if
B．so that
C．as long as
D．unless

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单项选择题
That is the day（）he found his new job.

A．on when
B．which
C．on which
D．in which
单项选择题
I can tell you for sure that the main building（）by the time you come back next year.

A．will be finished
B．will have been finished
C．will finish
D．finish
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